The world's oldest known religion is

The world's oldest known religion is Hinduism. The first records of religious practice come from Egypt around 4000 BCE.

Contributing factors  leading  to the harlem renaissance were the great migration of african americans to northern cities, which concentratedambitious  people in places where they could encourage each  other, and the first world war, which had created new industrial work opportunities for tens of thousands of people.

The answer to your question would be b